package com.chia.multienty.transaction.base.seata.at;

import io.seata.core.context.RootContext;
import org.apache.shardingsphere.infra.database.metadata.DataSourceMetaData;
import org.apache.shardingsphere.infra.executor.kernel.model.ExecutorDataMap;
import org.apache.shardingsphere.infra.executor.sql.hook.SQLExecutionHook;

import java.util.List;
import java.util.Map;

/**
 * Seata transactional SQL execution hook.
 */
public final class TransactionalSQLExecutionHook implements SQLExecutionHook {

    private static final String SEATA_TX_XID = "SEATA_TX_XID";

    private boolean seataBranch;

    @Override
    public void start(final String dataSourceName, final String sql, final List<Object> parameters,
                      final DataSourceMetaData dataSourceMetaData, final boolean isTrunkThread, final Map<String, Object> shardingExecuteDataMap) {
        if (isTrunkThread) {
            if (RootContext.inGlobalTransaction()) {
                ExecutorDataMap.getValue().put(SEATA_TX_XID, RootContext.getXID());
            }
        } else if (!RootContext.inGlobalTransaction() && shardingExecuteDataMap.containsKey(SEATA_TX_XID)) {
            RootContext.bind((String) shardingExecuteDataMap.get(SEATA_TX_XID));
            seataBranch = true;
        }
    }

    @Override
    public void finishSuccess() {
        if (seataBranch) {
            RootContext.unbind();
        }
    }

    @Override
    public void finishFailure(final Exception cause) {
        if (seataBranch) {
            RootContext.unbind();
        }
    }
}